Helium effects in ion-bombarded 304 stainless steel

Choyke, W. J.; McGruer, J.N.; Townsend, John C.; Spitznagel, J.A.; Doyle, N; Venskytis, F.J.

doi:10.1016/0022-3115(79)90333-7

Cited by 30 publications

(7 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our case, since the level of vacancy concentration due to the He implantation is rather negligible (especially compared with the vacancies induced by the heavy ions), it is more likely that the difference arises from the former hypothesis that helium is continuously absorbed by pre-existing bubbles during the dual-beam irradiations. The temperature effect suggested by [21] needs further investigation.…”

Section: Resultsmentioning

confidence: 96%

“…There have also been experiments done on 304 SS comparing dual-beam and preimplanted cases of 200 appm helium, with three study cases (i) pre-implantation at 25 °C, (ii) pre-implantation at temperature (650, 700 and 750 °C), and (iii) dual-beam irradiation (at 80 He appm/dpa) with 28 MeV Si 6+ to a dose of ~40 dpa [21,22]. They observed that dual-beam irradiation led to an average bubble size smaller than for the pre-implantation at temperature but larger than for the case of pre-implantation at room temperature, indicating an effect of the preimplantation temperature [21]. The number densities had the opposite trends.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Helium bubble nucleation and growth in alloy HT9 through the use of in situ TEM: Sequential he-implantation and heavy-ion irradiation versus dual-beam irradiation

Duemmler

Zheng

Baumier

et al. 2021

Journal of Nuclear Materials

View full text Add to dashboard Cite

The formation of He bubbles in Ferritic/Martensitic steel HT9 is investigated through the use of in situ Transmission Electron Microscopy coupled with He implantation and heavy ion irradiation. Of particular interest is the effect of increasing He appm/dpa ratio on the formation and growth of the bubbles, as well as the effect of the sequential order of ion irradiation i.e. Hepre-implantation followed by heavy-ion irradiation versus true dual-beam irradiation. The role of He is discussed.

show abstract

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Helium bubble nucleation and growth in alloy HT9 through the use of in situ TEM: Sequential he-implantation and heavy-ion irradiation versus dual-beam irradiation

Duemmler

Zheng

Baumier

et al. 2021

Journal of Nuclear Materials

View full text Add to dashboard Cite

show abstract

“…In the early years, it was widely estimated that helium effects on phase transformation are minor because it is chemically inert. However, later studies on stainless steels have subsequently shown that helium causes obvious changes to phase segregation and precipitation, such as Laves, G and η phases [26,29,30]. Nevertheless, there is no any data showing helium effects on phase changes in Ni alloys, whether helium affects the irradiation-induced disordering of Ni 3 (Al, Ti) γ' precipitates in Inconel X-750.…”

Section: Introductionmentioning

confidence: 99%

Effects of helium on irradiation-induced phase instability in a NiCrFeTiNbAl alloy

2020

View full text Add to dashboard Cite

The Ni-Fe-Cr based superalloy with percentage additions of Nb, Al and Ti, called "Inconel X750 superalloy", is studied with its importance in nuclear application. Under reactor neutron irradiation, the strengthening phase Ni 3 (Al, Ti) in the form of gamma prime precipitates were somehow disordered, and dissolved eventually, by which the mechanical properties of materials were degraded. It is of high interests to investigate the effects of transmutation production helium on radiationinduced instability of gamma prime in the materials. The transmission electron microscope in situ heavy ion irradiations with and without pre-injected helium are performed purposely. The precipitates were disordered by heavy ion irradiation after 0.06 displacement per atom (dpa). The presence of 2×10 −4 atoms helium delayed the disordering of Ni 3 (Al, Ti) precipitates to 0.68 dpa. With 4×10 −4 atoms helium, the precipitates required doses of > 2.7 dpa to become disordered. In addition, the precipitation of M 23 C 6 particles were observed at 600 °C irradiation to 5.4 dpa with 4×10 −4 atoms helium pre-injected.

show abstract

“…Helium is known to play a role in the development of the irradiated microstructure with modifications to cavities [4][5][6][7][8], dislocations [9][10][11], and secondary phases [12][13][14][15][16]. Previous studies on the effects of helium using ion irradiation have used either pre-implanted or co-injected helium.…”

Section: Introductionmentioning

confidence: 99%

Multiple ion beam irradiation for the study of radiation damage in materials

Taller

Woodley

Getto

et al. 2017

Nuclear Instruments and Methods in Physics Research Section B:

View full text Add to dashboard Cite

a b s t r a c tThe effects of transmutation produced helium and hydrogen must be included in ion irradiation experiments to emulate the microstructure of reactor irradiated materials. Descriptions of the criteria and systems necessary for multiple ion beam irradiation are presented and validated experimentally. A calculation methodology was developed to quantify the spatial distribution, implantation depth and amount of energy-degraded and implanted light ions when using a thin foil rotating energy degrader during multi-ion beam irradiation. A dual ion implantation using 1.34 MeV Fe + ions and energy-degraded D + ions was conducted on single crystal silicon to benchmark the dosimetry used for multi-ion beam irradiations. Secondary Ion Mass Spectroscopy (SIMS) analysis showed good agreement with calculations of the peak implantation depth and the total amount of iron and deuterium implanted. The results establish the capability to quantify the ion fluence from both heavy ion beams and energy-degraded light ion beams for the purpose of using multi-ion beam irradiations to emulate reactor irradiated microstructures.

show abstract

Helium effects in ion-bombarded 304 stainless steel

Cited by 30 publications

References 10 publications

Helium bubble nucleation and growth in alloy HT9 through the use of in situ TEM: Sequential he-implantation and heavy-ion irradiation versus dual-beam irradiation

Helium bubble nucleation and growth in alloy HT9 through the use of in situ TEM: Sequential he-implantation and heavy-ion irradiation versus dual-beam irradiation

Effects of helium on irradiation-induced phase instability in a NiCrFeTiNbAl alloy

Multiple ion beam irradiation for the study of radiation damage in materials

Contact Info

Product

Resources

About